Gmelin, 1791 Conus cingulatus G. B. Sowerby I, 1825: synonym of Conus adamsonii Broderip, 1836 Conus cingulum Gmelin, 1791: synonym of Conus quercinus [Lightfoot], 1786 Conus circae G. B. Sowerby II, 1858: synonym of Conus magus Linnaeus, 1758 Conus circumclausus Fenaux, 1942: synonym of Conus balteatus G. B. Sowerby I, 1833 Conus circumsignatus Crosse, 1865: synonym of Conus floccatus G. B. Sowerby I, 1841 Conus citrinus Kiener, 1846: synonym of Conus cocceus Reeve, 1844 Conus citrinus Gmelin, 1791: synonym of Conus regius Gmelin, 1791 Conus clandestinatous Shikama, 1979: synonym of Conus voluminalis Reeve, 1843 Conus clandestinus Shikama, 1979: synonym of Conus shikamai Coomans, Moolenbeek & Wils, 1985 Conus clarki Rehder & Abbott, 1951: synonym of Conasprella armiger (Crosse, 1858) Conus clenchi Martins, 1945: synonym of Conus lemniscatus Reeve, 1849 Conus clodianus Nardo, 1847: synonym of Conus ventricosus Gmelin, 1791 Conus clytospira Melvill & Standen, 1899: synonym of Conus milneedwardsi clytospira Melvill & Standen, 1899 Conus coelebs Hinds, 1843: synonym of Conus terebra Born, 1778 Conus coerulescens Schröter, 1803: synonym of Conus ermineus Born, 1778 Conus coletteae (Petuch, 2013): synonym of Conasprella mcgintyi (Pilsbry, 1955) Conus colorovariegatus Kosuge, 1981: synonym of Conus neptunus Reeve, 1843 Conus colubrinus Lamarck, 1810: synonym of Conus pennaceus Born, 1778 Conus columba Hwass in Bruguière, 1792: synonym of Conasprella puncticulata columba (Hwass in Bruguière, 1792) Conus comatosa Pilsbry, 1904: synonym of Conasprella comatosa (Pilsbry, 1904) Conus communis Swainson, 1840: synonym of Conus textile Linnaeus, 1758 Conus complanatus G. B. Sowerby II, 1866: synonym of Conus victoriae Reeve, 1843 Conus comptus A. Adams, 1855: synonym of Conus papilliferus G. B. Sowerby I, 1834 Conus comptus Gould, 1853: synonym of Conus purpurascens G. B. Sowerby I, 1833 Conus concatenatus Kiener, 1850: synonym of Conus textile Linnaeus, 1758 Conus concinnulus Crosse, 1858: synonym of Parametaria dupontii (Kiener, 1846) Conus concinnus Broderip, 1833: synonym of Parametaria dupontii (Kiener, 1846) Conus concinnus G. B. Sowerby II, 1866: synonym of Conus biliosus (Röding, 1798) Conus concolor G. B. Sowerby II, 1841: synonym of Conus hyaena concolor G. B. Sowerby II, 1841 Conus condensus G. B. Sowerby II, 1866: synonym of Conus canonicus Hwass in Bruguière, 1792 Conus connectens A. Adams, 1855: synonym of Conus daucus Hwass in Bruguière, 1792 Conus consanguineus E. A. Smith, 1880: synonym of Conus fergusoni G. B. Sowerby II, 1873 Conus consul Boivin, 1864: synonym of Conus magus Linnaeus, 1758 Conus contusus Reeve, 1848: synonym of Conus monachus